The Core i9-9900K is a cpu manufactured by Intel that was released on October 2018. This model has 8 Coffee Lake-S cores with HyperThreading, runs at 3600 MHz as base frequency and has a a thermal design power of 95 W.
The i9-9900K has 8x32+8x32 kB of cache L1, 8x256 kB of cache L2 and 16384 kB of cache L3.
Coffee Lake is the second refinement of Intel’s 14nm (Tri-Gate) technology. While it uses LGA1151 socket, it is incompatible with previous generations due to electrical changes in socket’s pins so these CPUs require Z370 chipset. This kind of generation introduced more cores in every range to compete with new AMD’s architecture. Coffee Lake uses DDR4 memory at 2400MHz for i3 and at 2666MHz for i5, i7 CPUs plus iGPU frequency has been increased 50MHz with respect to previous generation.
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
Multithread
Test#1 (Integers)
4996
36390 (x7.3)
Test#2 (FP)
20217
166549 (x8.2)
Test#3 (Generic, ZIP)
6545
54922 (x8.4)
Test#1 (Memory)
13775
8963 (x0.7)
TOTAL
45532
266824 (x5.9)
SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
Multithread
Test#1 (Integers)
18030
131344 (x7.3)
Test#2 (FP)
25978
204758 (x7.9)
Test#3 (Generic, ZIP)
6859
55741 (x8.1)
Test#1 (Memory)
14502
8989 (x0.6)
TOTAL
65369
400832 (x6.1)
AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
Multithread
Test#1 (Integers)
17979
130881 (x7.3)
Test#2 (FP)
27039
208498 (x7.7)
Test#3 (Generic, ZIP)
6627
54122 (x8.2)
Test#1 (Memory)
13600
8905 (x0.7)
TOTAL
65245
402406 (x6.2)
AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
Multithread
Test#1 (Integers)
32085
242980 (x7.6)
Test#2 (FP)
28170
220157 (x7.8)
Test#3 (Generic, ZIP)
6675
53966 (x8.1)
Test#1 (Memory)
14978
12218 (x0.8)
TOTAL
81908
529320 (x6.5)
Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.
Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.
Test#1 (Integers) [% vs time]
Test#2 (FP) [% vs time]
Test#3 (Generic, ZIP) [% vs time]
Test#1 (Memory) [% vs time]
Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.
If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.